How Much Is 3 Cups of Onions (Diced) in Ounces?
3 cups of onions (diced) weighs 16.93 oz. This is based on onions (diced) having a density of 160g per cup. Because cups measure volume and ounces measure weight, the result depends on the ingredient, and a different ingredient would give a different result for the same 3 cups.
Formula and Step-by-Step
- Start with 3 cups of onions (diced)
- 1 cup of onions (diced) = 160g
- 3 × 160 = 480g
- Convert grams to ounces: 480 ÷ 28.3495 = 16.93 oz
The same formula works for any amount. Multiply (or divide) by the density, then convert units as needed.
Measuring Tip
The weight of diced produce per cup depends on how finely it is cut. Smaller dice packs more tightly and weighs more per cup than large chunks.
Onions (Diced) at Different Amounts
How onions (diced) scales across common cups measurements. Your amount (3 cups) is highlighted.
For reference, 3 cups of onions (diced) (480g) is close in weight to a loaf of bread (450g).
Other Amounts of Onions (Diced)
| Cups | US Ounces | Metric Cup | Imperial Cup |
|---|---|---|---|
| 0.25 cups | 1.41 oz | 1.49 oz | 1.69 oz |
| 0.33 cups | 1.86 oz | 1.97 oz | 2.24 oz |
| 0.5 cups | 2.82 oz | 2.98 oz | 3.39 oz |
| 0.75 cups | 4.23 oz | 4.47 oz | 5.08 oz |
| 1 cup | 5.64 oz | 5.96 oz | 6.78 oz |
| 1.5 cups | 8.47 oz | 8.95 oz | 10.17 oz |
| 2 cups | 11.29 oz | 11.93 oz | 13.56 oz |
| 3 cups | 16.93 oz | 17.89 oz | 20.33 oz |
| 4 cups | 22.58 oz | 23.86 oz | 27.11 oz |
| 5 cups | 28.22 oz | 29.82 oz | 33.89 oz |
Understanding the Units
What is a Cup?
In US cooking, a cup measures volume, not weight. One standard US cup holds 236.588 ml of liquid. Because different ingredients have different densities, a cup of one ingredient can weigh very differently from a cup of another.
What is an Ounce?
Weight ounces and fluid ounces are different measurements. A fluid ounce measures volume (29.574 ml), while an ounce measures weight (28.35g). They only align for water, where 1 fl oz weighs approximately 1 oz.